发明名称 |
Controlled release system. |
摘要 |
<p>A device for the controlled release of an active material into an aqueous medium comprises a porous sintered body of a water soluble glass (11). The pores of the body are filled with a composition (12) consisting wholly or partially of an active material. The device may be provided with a low solubility coating (13). On immersion in an aqueous medium the glass (11) dissolves to become a sponge-like structure having a plurality of convoluted capillaries and from which the active material is released.</p> |
申请公布号 |
EP0140538(A2) |
申请公布日期 |
1985.05.08 |
申请号 |
EP19840306016 |
申请日期 |
1984.09.03 |
申请人 |
STANDARD TELEPHONES AND CABLES PUBLIC LIMITED COMPANY |
发明人 |
DRAKE, CYRIL FRANCIS;ARCH, ALFRED JOHN |
分类号 |
A01N25/28;A23P1/04;A61K9/00;A61K9/20;A61K9/22;A61K9/26;A61K47/02;A61L9/04;A61M31/00;C05G5/00;C11B9/00;G01N27/416;(IPC1-7):A61K9/22 |
主分类号 |
A01N25/28 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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